Molding apparatus.



E. ESTEP.

MOLDING APPARATUS.

AIPLIGATION FILED MAY 4, 190B.

Patented Oct. 27, 1908.

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MOLDING APPARATUS.

APPLICATION FILED MAY 4, 190a.

Patented Oct. 27, 1908.

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APPLICATION. TILED 11153111:I 190s.

Patented 0011.27, 1908.

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; UNI ED STATEQEEENT onnron.

EZRA nsreni or SANDWICH, ILLINOIS.

- MOLDING APPARATUS.

Be it known that I, EZRA ESTER, va citizen I of theUnited States, andresident of-Sandwich, county of Dekalb, and State of Illinois, haveinvented certain new and useful Improvements in Molding Apparatus,- of

' which the following'is a specification, and

which are illustrated in the accompanying drawings, forming a partthereof.

' The invention relates to molding a 'paratus, and more especially tothat inten ed for.

. bench use whereln the apparatus is manipulated by hand. v

The object of the invention is to provide sim 1e and improved apparatusfor hand .mo ding, the im rovements being intended more particular y tofacilitate the withdrawing of the patterns from the finished the di'(gonally mold. V i

- In the accompanying drawings Figure 1 is a sectional view of apparatusembodying the invention, the plane of the section being indicated. bythe line 1-1 on Fig. 2 Fig. 2 is a plan view of the same; Fig. 3 is adiagonal .25

sectional View of a mold produced by the apparatus illustrated in Figs.1 and 2-; Fig, 4 is a bottom. plan view of a pattern plate and strippingplate shown in Figs. 1 and 2; and Figs.- 5 an 6 are detail sectionalviews show ing the parts of the apparatus in different positions.

The cope anddrag members of a flask in-' tended for hand molding areillustrated in the drawings at 10. and 11, respectively.

These flask members are preferably ofthe 'openable or snap flask type,each being a two-part rectangular frame, the parts of the frame beinghinged together atoms of its corners, as indicated at 12, and connectedat o posite corner by a clasp or latch, esi nate 13. The two flaskmembers 10 an 11 fit. together in'the customary manner by means ofintercalating dowel "pins and apertures, designated respectively 14, 14,and 15, 15.

In carrying out the invention a pattern plate 16 is provided. Thispattern plate is ada ted to be interposed'between the parts 0 the flaskduring the formation'of a mold, and-as shown comprises a body portion17, coeXten sive in area with the meeting faces of-the. members l0, 11,and end flanges 18,19, which pro'ect be end the margins of the flask'mem cm W en the'parts are assemfipecification 0! Letters Patent. Y vApplication filed May 4:, 1908. Serial No. 430,780,

Patented. Oct. 27', 1908.

. .i bled. Each of the end flanges 18, 19, is provided with an aperture,as 20, 21, for receiving one of the dowel pins of the flask.

Patterns 22 are formed upon the pattern plate 16, the cope and dragportions of the patterns being upon opposite sides of the plate. Asshown the patterns provided are for a plurality of mongrel gears, thecope portion of each disposed upon the opposite face of the plate but inline with the ody of the 'corres ondin :attern com risin onl one.

of its core prints 23. The atterns 22 and the plate 16 are preferablyfl; and the patterns are secured to the plate by uniting the two sidesof the plate y a screw 24.

A stripping plate 25 is used in connection with the pattern plate 16 tobear upon the face of the sand mold formed in the flask during thewithdrawal of the, patterns 22.

This stripping plate is preferably coextensive in area with thepatternjplate 16, and as dicated at 26, 27,28 and 29, to fit snugly overthe drag portion of each of the patterns 22 against theface of thepattern plate.

Flanges 30 and 31, formedon the stripping" plate and corresponding tothe end flanges 18, 19, of the pattern plate, are ape rtured to receivethe dowel pins 14 of the flask. -.The drag ortion of eachof'the patterns22 is proviced'with a shankor base 32 for sepa 'plate16, and. sliding yengaging the other.

rmed of metal,

arts thereof on opposite part of the pattern intended shown its bodyportion is apertured, as inplate to permit a separation of the platesfor I a liniited distance,.preferably e'qualto the depth of the verticalwalls of the patterns 22.

Handles 35,36, are, provided for lifting the pattern plate 16, and thestripping plate 25,

and for separating the plates. .As shown, each ofth'esh hand es ispivoted to the strip ping plate, as at 37, 38,, and is provided with acam shoulder 39 for hearing against,the

face of the pattern late toseparate the plates when the hand eis swungto the, po-

drawings.

-As shown these handles are pivoted to react upon the bac of the patternplate 16,

.stripping plate 25 and the pattern plate 16 'to produce, an impressionin the sand mold gates formed in the drag portion of the sition ofservice indicated in Fig. 5 of the In use the flask members 10 and 11will be assembled with the pattern plate 16 and stripping plate 25interposed therebetween, the handles 35, 36, being folded to theposition illustrated in Figs. 1 and 6 to permit the to be so drawntogether that the whole of that part of each of the patterns 22 intendedto beformed protrudes through the stripping plate. Thedrag portion 11 ofthe flask will then be filledwith sand in the usual way, and the sandrammed against the face of the stripping plate 25, which, as shown, hasformed t iereon a rib 48 (Fig. 4) leading to each of the patterns 22 foreffecting a suitable gating of the mold. The apparatus will then beoverturned to present the cope member 10 of the flask uppermost. Thispart of the flask will be filled with sand and the sand rammed againstthe back of the pattern plate 16, a sprue 41 being preferably introducedto provide a suitable opening for pouring, which communicates with theflask by the rib 48 when the pattern plate has been withdrawn and theparts reassembled, as hereinafter described. The cope portion of theflask may now be removed in the usual way, and the patterns 22 will thenbe withdrawn from the sand contained in the drag portion 11 of the flaskby 2. raising of the handles 35, 36, to the position of serviceillustrated in Fig. 5 of the drawings, whereby the pattern plate 16 isseparated from the stripping plate 25, the latter bearing upon the faceor parting of the sand durr ing this operation and serving to prevent injury to the edges of. the mold by the with drawing of the patterns. Thepattern plate 16 and stripping plate 25 may now be wholly removed by theuse of the handles 35, 36, and the parts of the mold reassembled forpouring by fitting together the parts of the flask, the flask being thenpreferably removed from the mold by releasing the latches 13 and openingthe hinges 12.

e If desired handles 42, 43, may be employed for raisingthe cope member10 of the flask.

flanges 44, 45, formed upon the ends of the flask, as indicated at 46,and each continued beyond its pivot, as shown at 47, to

after the manner of a lever for raising the cope portion of the flaskwhen the handles are turned to the upright position illustrated in Fig.6 of the drawings.

As shown, by reasonof the angular form-' of the handles 35, 36, thesehandles serve when turned to the position illustrated in Fig. 5, tomaintain the pattern plate wand r stripping plate 25 in. separatedrelation.

VVhen the handles 42, 43 are turned to the position of service.

2. In combination, a pattern plate adapted to be interposed betweentherco e and drag members of a two-part molding ask, a stripping platecooperating with the pattern plate, and a pivoted lever reacting betweenthe plates to separate them.

3. In combination, a pattern plate for bench molding, a stripping latecooperating therewith, a pivoted hand e for lifting the plates adaptedto react between the plates to separate them when swung to the positionof service, and a bolt limiting the separation of the plates.

4. In combination, a molding flask for bench use, a pattern platefitting the mouth of the flask, and a pivoted handle for lifting theflask adapted to react on the pattern plate to separate it from theflask when swung to the position of service.

5. In combination, a two-part molding flask for bench use, a patternplate fitting the flask, a stripping plate cooperating with thepatternplate, and a pivoted handle for lifting the pattern plate adaptedto react between the pattern plate and the stripping plate to separatethem when swung to the position of service.

6. In combination, a two-part flask for bench molding comprising a copeand a drag, a pattern plate fitting between the parts of the flask, astripping plate cooperatingwith the pattern plate, a pivoted handle forlifting the cope of the flask adapted to react on the pattern plate toseparate it from the cope of 110 the flask when swung to the positionofservice, and a pivoted handle for lifting the pattern plate adapted toreact between the pattern plate and the stripping plate to separate themwhen swung to the position of service.

7. In combination, a two-part molding flask, and a pivoted handleforlifting one part of the flask adapted when swung to the position ofservice to react between the parts of the flask to separate them.

8. In combination a molding flask comprisin cope and drag members-and alever pivotsilly attached to one of the flask memers and engageable withthe other member a to se arate the two members.

9. n combination, a pattern plate for bench molding, a stripping platecooperating therewith, and a lever pivotedto one of the, plates andbearing upon the other, the bear 111g surface of the lever being ofangular form 130 whereby the lever serves for separating the ing surfaceof the lever being of angular form plates and for maintaining the platesin sepwhereby the lever serves for separating the "10 arate relation. 7plates and for maintaining the plates in sep- 10. In combination apattern plate for' arated relation.

5 bench molding, a stripping plate cooperating EZRA ESTEP.

therewith, a bolt limiting the separation of Witnesses: the plates, anda lever pivoted to one of the CLARK GRAVES,

plates and bearing upon the other, the bear- R. L. SI'DFQRD.

